[PATCH 06/10] platform/x86: alienware-wmi-wmax: Add support for the "custom" thermal profile

[Kurt Borja <kuurtb@gmail.com>]

All models with the "AWCC" WMAX device support a "custom" thermal
profile. In some models this profile signals user-space that the user
wants to manually control the fans, which are always unlocked. In other
models it actually unlocks manual fan control.

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
---
 .../platform/x86/dell/alienware-wmi-wmax.c    | 23 +++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/dell/alienware-wmi-wmax.c b/drivers/platform/x86/dell/alienware-wmi-wmax.c
index e8fe16da036a..0d31156f43bb 100644
--- a/drivers/platform/x86/dell/alienware-wmi-wmax.c
+++ b/drivers/platform/x86/dell/alienware-wmi-wmax.c
@@ -30,8 +30,6 @@
 #define AWCC_METHOD_THERMAL_CONTROL		0x15
 #define AWCC_METHOD_GAME_SHIFT_STATUS		0x25
 
-#define AWCC_THERMAL_MODE_GMODE			0xAB
-
 #define AWCC_FAILURE_CODE			0xFFFFFFFF
 #define AWCC_FAILURE_CODE_2			0xFFFFFFFE
 #define AWCC_THERMAL_TABLE_MASK			GENMASK(7, 4)
@@ -174,6 +172,11 @@ enum AWCC_THERMAL_TABLES {
 	AWCC_THERMAL_TABLE_USTT			= 0xA,
 };
 
+enum AWCC_SPECIAL_THERMAL_CODES {
+	AWCC_SPECIAL_PROFILE_CUSTOM		= 0x00,
+	AWCC_SPECIAL_PROFILE_GMODE		= 0xAB,
+};
+
 enum awcc_thermal_profile {
 	AWCC_PROFILE_USTT_BALANCED,
 	AWCC_PROFILE_USTT_BALANCED_PERFORMANCE,
@@ -576,9 +579,15 @@ static int awcc_platform_profile_get(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	if (out_data == AWCC_THERMAL_MODE_GMODE) {
+	switch (out_data) {
+	case AWCC_SPECIAL_PROFILE_CUSTOM:
+		*profile = PLATFORM_PROFILE_CUSTOM;
+		return 0;
+	case AWCC_SPECIAL_PROFILE_GMODE:
 		*profile = PLATFORM_PROFILE_PERFORMANCE;
 		return 0;
+	default:
+		break;
 	}
 
 	if (!is_awcc_thermal_profile_id(out_data))
@@ -666,9 +675,15 @@ static int awcc_platform_profile_probe(void *drvdata, unsigned long *choices)
 	if (bitmap_empty(choices, PLATFORM_PROFILE_LAST))
 		return -ENODEV;
 
+	/* Every model supports the "custom" profile */
+	priv->supported_profiles[PLATFORM_PROFILE_CUSTOM] =
+		AWCC_SPECIAL_PROFILE_CUSTOM;
+
+	set_bit(PLATFORM_PROFILE_CUSTOM, choices);
+
 	if (awcc->gmode) {
 		priv->supported_profiles[PLATFORM_PROFILE_PERFORMANCE] =
-			AWCC_THERMAL_MODE_GMODE;
+			AWCC_SPECIAL_PROFILE_GMODE;
 
 		set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
 	}
-- 
2.48.1